func (ushortComponent) Mat3(b []byte) [3][3]uint16 {
    return [3][3]uint16{
        {getUint16(b), getUint16(b[8:]), getUint16(b[16:])},
        {getUint16(b[2:]), getUint16(b[10:]), getUint16(b[18:])},
        {getUint16(b[4:]), getUint16(b[12:]), getUint16(b[20:])},